https://git.ruby-lang.org/ruby.git/commit/?id=e4ee992099

From e4ee99209932e424be426c5f4cad7e9704522e34 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@r...>
Date: Tue, 7 Jul 2020 09:02:22 +0900
Subject: vm_push_frame_debug_counter_inc: use branches

Ko1 doesn't like previous code.

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index e026667..4b65424 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -301,12 +301,22 @@ vm_push_frame_debug_counter_inc( https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L301
     if (RUBY_VM_END_CONTROL_FRAME(ec) != prev_cfp) {
         const bool curr = VM_FRAME_RUBYFRAME_P(reg_cfp);
         const bool prev = VM_FRAME_RUBYFRAME_P(prev_cfp);
-        const enum rb_debug_counter_type pat[2][2] = {
-            { RB_DEBUG_COUNTER_frame_R2R, RB_DEBUG_COUNTER_frame_R2C, },
-            { RB_DEBUG_COUNTER_frame_C2R, RB_DEBUG_COUNTER_frame_C2C, },
-        };
-        const enum rb_debug_counter_type i = pat[prev][curr];
-        rb_debug_counter[i]++;
+        if (prev) {
+            if (crr) {
+                RB_DEBUG_COUNTER_INC(frame_R2R);
+            }
+            else {
+                RB_DEBUG_COUNTER_INC(frame_R2C);
+            }
+        }
+        else {
+            if (crr) {
+                RB_DEBUG_COUNTER_INC(frame_C2R);
+            }
+            else {
+                RB_DEBUG_COUNTER_INC(frame_C2C);
+            }
+        }
     }
 
     switch (type & VM_FRAME_MAGIC_MASK) {
-- 
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